28702978120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{23147563}}^1$

素因数の和:23147605

約数の個数: 32

約数和(自身を含む): 66664984320

約数和(自身を除く): 37962006200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 23147563, 46295126, 92590252, 115737815, 185180504, 231475630, 462951260, 717574453, 925902520, 1435148906, 2870297812, 3587872265, 5740595624, 7175744530, 14351489060, 28702978120]

約数ペア:

[(1, 28702978120), (2, 14351489060), (4, 7175744530), (5, 5740595624), (8, 3587872265), (10, 2870297812), (20, 1435148906), (31, 925902520), (40, 717574453), (62, 462951260), (124, 231475630), (155, 185180504), (248, 115737815), (310, 92590252), (620, 46295126), (1240, 23147563)]